Hat pin



FIG. 1 is a perspective view of a hat pin displaying my new design, as attached to a representative hat;

FIG. 2 is a side elevational view of a hat pin made in accordance with my new design, the front, rear, and opposite side views being substantially the same;

FIG. 3 is a top plan view of thereof; and,

FIG. 4 is a bottom plan view of thereof;

The broken line drawing of a hat and straight pin shown in FIG. 1 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a hat pin, as shown and described. 